// javascript by Patrick Griffiths and Dan Webb:  http://htmldog.com/articles/suckerfish/dropdowns/
sfHover = function() {
  var sfE = document.getElementById("nav").getElementsByTagName("li");
  for (var i=0; i<sfE.length; i++) {
    sfE[i].onmouseover=function() { this.className+=" hover"; }
    sfE[i].onmouseout=function()  { this.className=this.className.replace(new RegExp(" hover\\b"), ""); }
  }
}
if (window.attachEvent) window.attachEvent("onload", sfHover);